1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 17.

A159217

1/8 the number of n X n arrays of squares of integers with every 2X2 subblock summing to 17.

Terms

    a(0) =3a(1) =8a(2) =17a(3) =35a(4) =69a(5) =137a(6) =269a(7) =533a(8) =1053a(9) =2093a(10) =4157a(11) =8285a(12) =16509a(13) =32957a(14) =65789a(15) =131453a(16) =262653a(17) =525053a(18) =1049597a(19) =2098685a(20) =4196349a(21) =8391677a(22) =16781309a(23) =33560573a(24) =67117053a(25) =134230013a(26) =268451837

External references